Red-Bellied Mudsnake Farancia abacura - Special Concern

Adult from southeastern Missouri

Identification

This snake is unlike any other in Indiana and may no longer be present in the state. Adults have glossy, smooth scales and are mostly black. Their underbelly is adorned with bright red blotches that extend onto the sides. The tail comes to a sharp point at the end and the head is indistinct from the neck. Though some adults have been noted at around six feet (1.8 m ) long in southern states, most adults are two to three feet (60 - 90 cm) long.

There is no other snake that looks similar to this species in Indiana.

Adult from southeastern Missouri
Neonate from southeastern Missouri

Ecology and Conservation

The Red-Bellied Mudsnake prefers swamps and lowlands where it feeds primarily upon salamanders, sirens, and fish. The Red-Bellied Mudsnake is commonly referred to as the “stinging snake” because of its tendency to press the sharp spine (at least on young snakes) at the tip of its tail upon the collector’s hand when first captured.

It is listed as State Extirpated in Indiana, although emigration of individuals from bordering states is possible. Missouri lists this species as state Imperiled.

Excavated nest and hatchling from southeastern Missouri
Cypress-buttonbush swamp from Southeastern Missouri

Distribution

In Indiana, Red-Bellied Mudsnake are known from a single site and a couple specimens collected during the mid-1900's in Knox County. The swampland where they were collected has long since been drained and no additional snakes have been reported. If Red-Bellied Mudsnake still occur in the state, they would likely be in the cypress swamps of far southwestern Indiana. These uniquely aquatic snakes are highly specialized predators that feed almost entirely on sirens and live most of their life in swamps and wetlands, emerging only to disperse, lay eggs, and shed their skin.

Taxonomy

Two subspecies of the Red-Bellied Mudsnake are currently recognized, but only the Western Mudsnake (F. a. reinwardtii) was once found in Indiana.

Literature Cited

Distribution Map
Distribution map of Red-Bellied Mudsnake (Farancia abacura)
Photographs